<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/**
 * 判断用户是否用手机登入
 */
class Mobile_lib
{
    protected $ci;

    public function __construct()
    {
        $this->ci =& get_instance();
    }

    function is_mobile_request()  {
        $_SERVER['ALL_HTTP'] = isset($_SERVER['ALL_HTTP']) ? $_SERVER['ALL_HTTP'] : '';
        $mobile_browser = '0';
        if(preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|iphone|ipad|ipod|android|xoom)/i', strtolower($_SERVER['HTTP_USER_AGENT']))){
            $mobile_browser++;
        }

        if((isset($_SERVER['HTTP_ACCEPT'])) and (strpos(strtolower($_SERVER['HTTP_ACCEPT']),'application/vnd.wap.xhtml+xml') !== false)){
            $mobile_browser++;
        }
        if(isset($_SERVER['HTTP_X_WAP_PROFILE'])){
            $mobile_browser++;
        }
        if(isset($_SERVER['HTTP_PROFILE'])){
            $mobile_browser++;
        }
        $mobile_ua = strtolower(substr($_SERVER['HTTP_USER_AGENT'],0,4));
        $mobile_agents = array(
            'w3c ','acs-','alav','alca','amoi','audi','avan','benq','bird','blac',
            'blaz','brew','cell','cldc','cmd-','dang','doco','eric','hipt','inno',
            'ipaq','java','jigs','kddi','keji','leno','lg-c','lg-d','lg-g','lge-',
            'maui','maxo','midp','mits','mmef','mobi','mot-','moto','mwbp','nec-',
            'newt','noki','oper','palm','pana','pant','phil','play','port','prox',
            'qwap','sage','sams','sany','sch-','sec-','send','seri','sgh-','shar',
            'sie-','siem','smal','smar','sony','sph-','symb','t-mo','teli','tim-',
            'tosh','tsm-','upg1','upsi','vk-v','voda','wap-','wapa','wapi','wapp',
            'wapr','webc','winw','winw','xda','xda-'
        );
        if(in_array($mobile_ua, $mobile_agents)){
            $mobile_browser++;
        }
        if(strpos(strtolower($_SERVER['ALL_HTTP']), 'operamini') !== false){
            $mobile_browser++;
        }
        // Pre-final check to reset everything if the user is on Windows
        if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows') !== false){
            $mobile_browser=0;
        }
        // But WP7 is also Windows, with a slightly different characteristic
        if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows phone') !== false){
            $mobile_browser++;
        }
        if($mobile_browser>0){
            return true;
        }
        else{
            return false;
        }
    }

}

/* End of file Mobile_lib.php */
/* Location: ./application/libraries/Mobile_lib.php */
